Adult Lesser Black-backed Gull, moulting to winter plumage (prebasic moult). P1 to P5 are new and fully grown, P6 is almost fully grown, P7 has been dropped. P10 shows a medium mirror, not extending to the tip. The small white tips of P8 and P9 are worn. The head and neck show distinct "winter" marking. PMS=30 (P1=5, P2=5, P3=5, P4=5, P5=5, P6=4, P7=1, P8=0, P9=0, P10=0).